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INVESTIGATIONS INTO ROAD BUILDING PRACTICE IN THE TROPICS. SIX STUDIES OF SOME ROAD BUILDING OPERATIONS ON A ROAD CONSTRUCTION SCHEME IN TORTOLA, BRITISH VIRGIN ISLANDS

AS PART OF A STUDY OF ASPECTS OF NORMAL ROAD-BUILDING PRACTICE IN THE TROPICS, MEASUREMENTS WERE MADE DURING THE CONSTRUCTION OF A CEMENT-STABILIZED BASE IN TORTOLA. THE BASE IS BEING CONSTRUCTED WITH A SINGLE-PASS STABILIZING TRAIN BY ADDING A SMALL PROPORTION OF CEMENT TO A GRANULAR MATERIAL KNOWN LOCALLY AS TARRAS. THE DATA OBTAINED SHOWED THAT WITH THE CONSTRUCTION METHODS USED ADEQUATE STATES OF COMPACTION AND THICKNESSES OF STABILIZED BASE WERE BEING PRODUCED BUT SHAPING BY BULLDOZERS WAS UNABLE TO PRODUCE A SURFACE OF ACCEPTABLE REGULARITY. /RRL/